Clamping device and the like.



J. H. HEWITT & J. WALKER, JB.

GLAMPING DEVICE AND THE LIKE.

APPLICATION FILED JUNE 11, 1907.

Patented Dec. 29, 1908;

'A bers, flexible mem members between To all 'whom it may concern:

U'Nrrnn STATES vPATENT onerous.

JoHNHeR-BHRT HEwITT, or BIRMINGHAM-AND JOHN WALKER, Je.,y or LONDON, ENGLAND.

i 'CLAMPING DEVICE AND THE LIKE.

No. l907,800.

vSpecification of Letters Patent.

Patented Dec. 29, 1908.

'Applieationlmea June 11, 1907. serial No. 378,360.

Be it known that. we, JOHN HERBERT HEWITT, of 7 Priory road,.lEdg'baston, Birmingham, Warwickshire, England, engineer,

` and J OHN WALKER, J r., of Farringdon House,

Warwick Lane, London, England, manufacturer, have invented ycertain new and useful Improvements in and Relatingto Clamping Devices and the Like, of which the following is aspeciiication.4

This invention relates to clamping and similar devices where itis required to maintain pressure for some time asin loose leaf books, presses, andl the like, and has for its object to provide an improved formof device which canbe readily operated and which when locked prevents' motion of the clamp.- ing members either towards or'away from one another.

A' device cmstructed in accordance with this invention com rises 'two clamping memilfers-s'ecured to one of said clamping members and adapted topass through the other clamping member, against which they are pressed and secured by cams orsimilar devices, and meansfor reventing" the deformation of that part ofA t e flexible b the twoclamping memers.

- Referring nowfto the drawings Figure 1 ,is an elevation partly in section of one form ed to surround said. chains,

lthereon and adapted to 0f device constructed in accordance with' .this invention and 'Fi 2 is a -view thereof partly inv section taken in the 7direction lof the arrow A,1Fig. 1.

The lform of ada ted for use as mechanism for loose leaf boo vs or the like .and Vcom-prises two 'hollow clampingmembe'rsa b, square incross section,.'tw`o chains c c- 'ofa-form hereinafter more full member` and adapted: to pass through and along .the inside of the other ber c, tubes 'd ,d on the clam ing member e adapted .tqt'elesco e into -tu es e e on the clampingmember' said tubes being adaptsprings f f semember c and cured within the clamping adapted to guide said chains therealong, and

pivoted levers g g having cams h h 'mounted depress the springs f f against the chains against the clamping member c. The chains `fare formed of links, preferably flat, se-

chains are secured 'and held againstvdeformadevice shoviml partieulai'lyt'. forthsecure'dI to the clamping c c to secure same pressed so'as to o 'and secure the c =the eformation of .that partvof t strains. To revent the deformation of the chains the te escopin tubes d d and e e are made to fit around t echains as closely as possible'. It is very desirable that curved guides such as y' -be employed so that the chain may be closely adjusted, and it is also desirable that the linksbe curved on their inner surf-acesto conform to the guides.

Inuse the device is opened by raising the levers g g so as to release the pressure on the tionl they are adapted to resist compressive chains and the clamping members can then be pulled apart. In closing the device, the clam ingv memhe'rsare forced together and the c ains slide along in the tubes intothe clamping member a, the'levers are then deerate the cams h h to press ains against the clamping member a. l

What We claim and desire Letters APatent is 1. A clamping device comprising the combination of two clamping members, relatively inelastic flexible members secured to one of said clam ing members and adapted to pass through t e other clamping member, means for frictionally pressing and securing said' flexible members against .said other clam ing member and means for reventllg nembers between the two clamping memeI'S. 'j

2. A clamping device comprising the combination of twoclampingmembers, chains v composed of links connected'together by ins and secured to one' of said clamping mem ers and adapted to pass through the other clamping member, means fonfrictionally pressing and securing said chains against said other clam ing member and means for preventing the eformation of that part of the chains between the 'two 'clamping members.

3. .A clamping device comprising the combination of two vclamping members, tele- .scopic tubes mounted on said clamping members, chains composedof links connected together by pins and :secured tov one of said clamping `members and adapted lto pass through the telescopictubes and through the t 'tightly therein, and means for pressing and securingv4 said chains 'against said other clamping member. f

4.' A clamping device lconriprijsmthe -v-combination of two. clamping members, -teleto secure f e `flexible other clamping member, said telescopic- -members beingof such size that said chains gether by pins and secured to one of said l scopic tubes mounted on said clamping memclamping member, whereby when the second bers, chains composed of links connected toclamping member is pressed downwardly clamping members and4 adaptedA to pass through the telescopic tubes and through the other clamping member, said telescopic mem-bers being of such size that said chains I fit tightly therein, springs fitted in said other clamping member and adapted to guide said chains therealong and cams mounted on levers pivoted to said other clamping member,

vsubstantially as set forth.

5. A clamping device comprising the combination of two clamping members, a relatively inelastic flexible member. secured to one of said clamping members and adapted to pass to theother clamping member, means for frictionally pressing and securing said flexible member against said other clamping member, and means for preventing the deformation of that part of the flexible member A"between the two clamping members.

`\6. A clamping device comprising the combination' of two clamping members, a relatively inelastic flexible member secured to one of said clamping -members and adapted` to pass to the other clamping member, means for frictionally pressing and securing said flexible member against said other clamping member, and means for preventing the deformation of that part of the flexible member between the two clamping members, said last named means com rising telescopic tubes. throughwhich sai flexible member passes.

7. A clampingV device comprising the combination of two clamping members, a flexible member secured at one end to one of said clamping members, and havingits other end lying free within said clamping member, means for guiding the free end of said' flexible member in said second clamping member, and means for fastening said flexible member to said second clamping member, said guid- .ing'means being adapted to prevent any materialslaelrness in said flexible member be tween the" fastening means andthe first toward the first said flexible member is guided within said second clamping member, and when said fastening means is operated said clamping members are locked in their compressed positions.

8. A clamping device comprising the combination of two clam )ing members, and means for holding sai members together comprising chains secured to one of said clamping members, and having their opposite ends in efieet disengaged from but extending along the 'other of said clamping members, means for guiding said chains to move lengthwise automatically as the clamping members are moved toward or from each other, and means for fastening said chains to the second clamping member.

9. A clamping device comprising the combination of two clamping members, and means for holding said members together comprising chains secured to one of said clamping members and having their opposite ends 4in effect disengaged from but extending along the second clam )ing member, said second clamping member liaving means for guiding the free ends of the chains so that they move automatically in a lengthwise direction as the clamping members are moved toward and from each other, and clamps for' engaging said chains to hold them relatively to the second clamping member.

In witness whereof, we have hereunto signed our names in the presence of two subscribing witnesses.

JOHN HERBERT HEWITT. JOHN WALKER, JUN. 

